[ Common metals and their alloys; metal building materials, namely, alloyed iron, metal alloys for use in manufacturing, unwrought or semi-wrought steel alloys, building curtain walls and framing made primarily of metal, and cable junction sleeves of metal; portable buildings of metal, namely, greenhouses, and portable fabric-covered buildings made substantially of metal; non-electric cables and wires of metal, namely, metal cable wire; ironmongery in the nature of small items of hardware, na...